⚡Physics Calculators
Free physics calculators with diagrams and worked solutions — from kinematics and forces to waves, optics, and relativity.
Calculate range, maximum height, flight time, and impact velocity, and watch the trajectory animate on a live canvas.
Solve for any two unknowns using the five kinematic equations.
Solve for voltage, current, resistance or power with a formula triangle.
Apply Newton's second law to solve for force, mass or acceleration.
Calculate kinetic energy, potential energy, work and power.
Relate wave speed, frequency, wavelength and period.
Calculate gravitational attraction between two masses.
Find the electrostatic force between two point charges.
Calculate the period of a pendulum with an animated visual.
Find the buoyant force and determine if an object sinks or floats.
Solve the thin lens equation and draw the ray diagram.
See how time slows down as you approach the speed of light.
Solve Q=mcΔT for any variable with units and formula shown.
Calculate centripetal force, acceleration and orbital speed.
Convert between decibels and sound intensity or pressure ratios.
About these physics calculators
These physics tools show the formula, substitute your values, and walk through the calculation — with diagrams and animations where they add insight. The projectile motion calculator animates the trajectory while displaying range, maximum height, and time of flight. The SUVAT calculator identifies which equations apply for your given knowns and solves step by step.
Every tool runs entirely in your browser with no signup required. Whether you're studying kinematics, electrostatics, thermodynamics, or special relativity — these calculators are ready to use immediately.